let express = require('express');
let app = express();
app.get('/say', function (req, res) {
    let { wd, cb } = req.query;
    // console.log(wd)
    // res.send('ok')
    res.end(`${cb}(123)`)
})
app.listen(3000, () => {
    console.log('启动成功')
})